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-rw-r--r--tools/lib/bpf/Makefile17
1 files changed, 9 insertions, 8 deletions
diff --git a/tools/lib/bpf/Makefile b/tools/lib/bpf/Makefile
index 168140f8e646..eca584fb061e 100644
--- a/tools/lib/bpf/Makefile
+++ b/tools/lib/bpf/Makefile
@@ -49,6 +49,14 @@ man_dir_SQ = '$(subst ','\'',$(man_dir))'
export man_dir man_dir_SQ INSTALL
export DESTDIR DESTDIR_SQ
+# Defer assigning EXTRA_CFLAGS to CFLAGS until after including
+# tools/scripts/Makefile.include, as it may add flags to EXTRA_CFLAGS.
+ifdef EXTRA_CFLAGS
+ CFLAGS :=
+else
+ CFLAGS := -g -O2
+endif
+
include $(srctree)/tools/scripts/Makefile.include
# copy a bit from Linux kbuild
@@ -70,13 +78,6 @@ LIB_TARGET = libbpf.a libbpf.so.$(LIBBPF_VERSION)
LIB_FILE = libbpf.a libbpf.so*
PC_FILE = libbpf.pc
-# Set compile option CFLAGS
-ifdef EXTRA_CFLAGS
- CFLAGS := $(EXTRA_CFLAGS)
-else
- CFLAGS := -g -O2
-endif
-
# Append required CFLAGS
override CFLAGS += -std=gnu89
override CFLAGS += $(EXTRA_WARNINGS) -Wno-switch-enum
@@ -84,7 +85,7 @@ override CFLAGS += -Werror -Wall
override CFLAGS += $(INCLUDES)
override CFLAGS += -fvisibility=hidden
override CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
-override CFLAGS += $(CLANG_CROSS_FLAGS)
+override CFLAGS += $(EXTRA_CFLAGS)
# flags specific for shared library
SHLIB_FLAGS := -DSHARED -fPIC